using System;

using System.Linq;

​

namespace Sum_Adjacent_Equal_Numbers

{

    class Program

    {

        static void Main(string[] args)

        {

            var numbers = Console.ReadLine().Split(' ').Select(double.Parse).ToList();

            for (int i = 0; i < numbers.Count - 1; i++)

            {

                while (numbers.Count > 1 && numbers[i] == numbers[i + 1])

                {

                    numbers[i + 1] *= 2;

                    numbers.RemoveAt(i);

                    i = 0;

                }

            }

            Console.WriteLine(string.Join(" ", numbers));

        }

    }

}

​